Vulnerability in Red Hat Build of Keycloak

[ Description ]Official description

A flaw was found in the installation provider and client registration endpoints of the Keycloak identity management service. A realm administrator with only the read-only view-clients role can access the active primary secret of any confidential client, which should normally be restricted. This exposed secret can be used to impersonate the client and gain unauthorized access to its associated service account permissions.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• BSI CERT-Bund8 Oct 2026WID-SEC-2026-3849

  Keycloak: Multiple vulnerabilities Translated from German

  CVE-2026-107889CVE-2026-107623CVE-2026-107604

[ References ]References

• access.redhat.com/security/cve/CVE-2026-107604
• bugzilla.redhat.com/show_bug.cgi